Adapter



FIG. 1 is a front perspective view of an adapter showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken lines in the drawings illustrate portions of the adapter and form no part of the claimed design. 

CLAIM The ornamental design for an adapter, as shown and described. 